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American Heritage® Dictionary of the English Language, Fourth Edition

1. adv. In or to a higher position: looking up.
2. adv. In a direction opposite to the center of the earth or a comparable gravitational center: up from the lunar surface.
3. adv. In or to an upright position: sat up in bed.
4. adv. Above a surface: coming up for air.
5. adv. So as to detach or unearth: pulling up weeds.
6. adv. Above the horizon: as the sun came up.
7. adv. Into view or existence: draw up a will.
8. adv. Into consideration: take up a new topic.
9. adv. In or toward a position conventionally regarded as higher, as on a scale, chart, or map: temperatures heading up; up in Canada.
10. adv. To or at a higher price: stocks that are going up.
11. adv. So as to advance, increase, or improve: Our spirits went up.
12. adv. With or to a greater intensity, pitch, or volume: turn the sound up.
13. adv. Into a state of excitement or turbulence: stir up; rouse up.
14. adv. Completely; entirely: drank it up in a gulp; fastened up the coat.
15. adv. Used as an intensifier of the action of a verb: typed up a list.
16. adv. So as to approach; near: came up and kissed me.
17. adv. To a stop: pulled up in front of the station.
18. adv. Each; apiece: The score was tied at 11 up.
19. adv. Apart; into pieces: tore it up.
20. adv. Nautical To windward.
21. adj. Being above a former position or level; higher: My grades are up. The pressure is up.
22. adj. Out of bed: was up by seven.
23. adj. Standing; erect.
24. adj. Facing upward: two cards up, one down; the up side of a tossed coin.
25. adj. Raised; lifted: a switch in the up position.
26. adj. Moving or directed upward: an up elevator.
27. adj. Marked by increased excitement or agitation; aroused: Our fighting spirit was up.
28. adj. Informal Cheerful; optimistic; upbeat.
29. adj. Slang Happily excited; euphoric: After receiving the award, the performer was really up.
30. adj. Informal Taking place; going on: wondered what was up back home.
31. adj. Being considered; under study: a contract that is up for renewal.
32. adj. Running as a candidate.
33. adj. On trial; charged: The defendant is up for manslaughter.
34. adj. Having been finished; over: Your time is up.
35. adj. Informal Prepared; ready: had to be up for the game.
36. adj. Informal Well informed; abreast: not up on sports.
37. adj. Functioning or capable of functioning normally; operational: Their computers are now up.
38. adj. Sports Being ahead of one's opponent: up two strokes in golf.
39. adj. Baseball At bat.
40. adj. As a bet; at stake.
41. adj. Nautical Bound; headed: a freighter up for Panama.
42. prep. From a lower to or toward a higher point on: up the hill.
43. prep. Toward or at a point farther along: two miles up the road.
44. prep. In a direction toward the source of: up the Mississippi.
45. prep. Nautical Against: up the wind.
46. n. An upward slope; a rise.
47. n. An upward movement or trend.
48. n. Slang A feeling of excitement or euphoria.
49. v. To increase: upped their fees; upping our output.
50. v. To raise to a higher level, especially to promote to a higher position.
51. v. Nautical To raise: up anchor; up sail.
52. v. To get up; rise.
53. v. Informal To act suddenly or unexpectedly: "She upped and perjured her immortal soul” ( Margery Allingham).
54. idiom. up-and-up Informal Open and honest.
55. idiom. up against Confronted with; facing: up against a strong opponent.
56. idiom. up to Occupied with, especially devising or scheming: a prowler up to no good.
57. idiom. up to Able to do or deal with: didn't feel up to a long drive.
58. idiom. up to Dependent on: The success of this project is up to us.
59. idiom. up to To the point of; as far as: I'm up to chapter 15 in my book.
60. idiom. up to As long as: allowed up to two hours to finish the test.
61. idiom. up to As many as: seed that yields up to 300 bushels per acre.

Century Dictionary and Cyclopedia

1. In printing, finished; noting completion of a task: as, the chapter is up; the paper is up.
2. n. An abbreviation of United Presbyterian Church.
3. Of position or direction: In, toward, or to a more elevated position; higher, whether vertically, or in or by gradual ascent; aloft: as, to climb up to the top of a ladder; up in a tree.
4. Specifically— In or to an erect position or posture; upright: as, to sit or stand up; to set chessmen up on the board; a stand-up collar; in a specific use, on one's feet: as, the member from A—was up—that is, was addressing the House.
5. Above the horizon: as, the moon will be up by ten o'clock.
6. At or to a source, head, center, or point of importance: as, to follow a stream up to its source; to run the eye up toward the top of a page; to go up to London from Cornwall; often, in the direction of the north pole: as, up north: sometimes noting mere approach to or arrival at any point, and in colloquial or provincial use often redundant.
7. At, toward, or to a higher point or degree in an ascending scale, as of rank, quantity, or value: in many idiomatic and colloquial phrases. Noting specifically— Rank, superiority, or importance: as, from a pauper up to a prince; to be up at the head of one's class; to feel set up by success.
8. At, of, or to a height specified; of a particular measurement upward; as high as: usually with to or at.
9. At or to a point of equal advance, extent, or scope; abreast (of); so as not to fall short (of) or behind; not below, behind, or inferior (to): as, to catch up in a race; to keep up with the times; to live up to one's income.
10. Hence In a condition to understand, encounter, utilize, or do something; well equipped with experience, skill, or ability; equal (to): as, to be well up in mathematics; to be up to the needs of an emergency.
11. In or into activity, motion, operation, etc.
12. Specifically— Out of bed; risen from sleep.
13. In or into prominence or consideration; into or to the light: as, a missing article turns up; a question comes up for discussion; to bring up a new topic of conversation.
14. Onward to or from a specified time: as, an account up to date.
15. To complete existence, maturity, or age: as, to spring or grow up; to bring up a child properly.
16. In or into a place of storage, retirement, concealment, etc., as for safe-keeping or as not being used or required at the time; aside; by: as, to put up one's work for an hour or two; to put up medicine in a bottle.
17. In or into a state of union, contraction, closeness of parts, etc.; together; close: as, to fold up a letter; to shrivel up; to draw up cloth upon a gathering-thread; to shut up an umbrella; to add up a column of figures.
18. To the required, desired, or uttermost point; to completion or fulfilment; wholly; thoroughly; quite: as, to pay up one's debts; to burn up the fuel; to build up one's constitution; to use up one's patience.
19. To or at an end; over: specifically, in Great Britain, noting adjournment or dissolution: as, Parliament is up.
20. Open.
21. See the verbs.
22. See the verbs.
23. Here and there; to and fro; back and forth; one way and another.
24. In every particular; completely; wholly; exactly; just.
25. Downright; bluntly; without mincing matters; “without gloves”: as, to handle a matter up and down; to talk up and down: sometimes used adjectively: as, to be up and down with a person.
26. On the point of doing; about to do; planning; engaged in.
27. Upward or aloft in or on; to, toward, near, or at the top of: as, to climb up a tree.
28. To, toward, or at the source, head, center, or important part of: as, to walk up town; often, toward the interior of (a region): as, the explorers went up country.
29. Upon or on (in many senses).
30. Inclining or tending up; going up; upward: as, an up grade; an up train; an up beat in music; an up bow in violin-playing.
31. n. Used in the phrase ups and downs, rises and falls; alternate states of prosperity and the contrary; vicissitudes.

Wiktionary

1. adv. Away from the centre of the Earth or other planet; in opposite direction to the downward pull of gravity.
2. adv. intensifier Thoroughly, completely.
3. adv. North.
4. adv. Higher in pitch.
5. adv. Larger, greater:
6. adv. rail transport Traditional term for the direction leading to the principal terminus, towards milepost zero.
7. adv. sailing Against the wind or current.
8. adv. In a positive vertical direction.
9. adv. cricket Relatively close to the batsman.
10. adv. Without the use of additional ice.
11. adv. UK, academia Towards Cambridge or Oxford.
12. prep. Toward the top of.
13. prep. Toward the center, source, or main point of reference; toward the end at which something is attached.
14. prep. Further along (in any direction).
15. prep. Into or out of one's possession or consideration.
16. prep. From south to north of
17. adj. Awake.
18. adj. Finished, to an end
19. adj. In a good mood.
20. adj. Willing; ready.
21. adj. Next in a sequence.
22. adj. Happening; new.
23. adj. Facing upwards; facing toward the top.
24. adj. Standing.
25. adj. On a higher level.
26. adj. Available; made public.
27. adj. Of a person, informed about; abreast of; current.
28. adj. computing Functional; working.
29. adj. of a railway line or train Traveling towards a major terminus.
30. adj. Headed, or designated for going, upward, as an escalator, stairway, elevator etc.
31. adj. bartending Served chilled and strained into a stemmed glass.
32. adj. slang Erect.
33. adj. Above the horizon, in the sky (i.e. during daytime or night-time)
34. adj. slang well-known; renowned
35. n. uncountable The direction opposed to the pull of gravity.
36. n. countable A positive thing.
37. v. transitive, colloquial To increase or raise.
38. v. transitive, colloquial To promote.
39. v. intransitive To act suddenly, usually with another verb.

GNU Webster's 1913

1. adv. Aloft; on high; in a direction contrary to that of gravity; toward or in a higher place or position; above; -- the opposite of down.
2. adv. From a lower to a higher position, literally or figuratively; as, from a recumbent or sitting position; from the mouth, toward the source, of a river; from a dependent or inferior condition; from concealment; from younger age; from a quiet state, or the like; -- used with verbs of motion expressed or implied.
3. adv. In a higher place or position, literally or figuratively; in the state of having arisen; in an upright, or nearly upright, position; standing; mounted on a horse; in a condition of elevation, prominence, advance, proficiency, excitement, insurrection, or the like; -- used with verbs of rest, situation, condition, and the like.
4. adv. To or in a position of equal advance or equality; not short of, back of, less advanced than, away from, or the like; -- usually followed by to or with.
5. adv. To or in a state of completion; completely; wholly; quite.
6. adv. Aside, so as not to be in use.
7. prep. From a lower to a higher place on, upon, or along; at a higher situation upon; at the top of.
8. prep. From the coast towards the interior of, as a country; from the mouth towards the source of, as a stream.
9. prep. obsolete Upon.
10. n. colloq. The state of being up or above; a state of elevation, prosperity, or the like; -- rarely occurring except in the phrase ups and downs.
11. adj. Inclining up; tending or going up; upward.

WordNet 3.0

1. adv. to a higher intensity
2. adj. used up
3. adj. (usually followed by `on' or `for') in readiness
4. adv. to a more central or a more northerly place
5. v. raise.
6. adj. getting higher or more vigorous
7. adv. to a later time
8. adv. spatially or metaphorically from a lower to a higher position
9. adv. nearer to the speaker
10. adj. open.
11. adj. extending or moving toward a higher place
12. adj. being or moving higher in position or greater in some value; being above a former position or level
13. adj. out of bed
14. adj. (used of computers) operating properly